slightly off topic but I agree. In this day and age it should work on the 3 main browsers from day 1. Opera should work if this is the case.
Personally, I don't use Opera or one of the three main browsers most of the time, so I periodically run into a site that tells me they don't support my browser, in which case I switch browsers.
I don't expect everyone to cater to my whim all the time.